Computer start but no display

Registration date
Tuesday December 22, 2015
Last seen
December 22, 2015
- Dec 22, 2015 at 01:38 AM
I have my monitor on a table, the wirings and connections are behind the table,an object(one of my speakers which was on the table) fell on the wires , the machine was on and i was browsing internet . when i lifted the object the screen was on but the mouse and keyboard was not functioning.
i shutdowned directly using the cpu power button. after that i again switched on and
pressed the cpu button i found the monitor's display was gone. i could hear the beep and also the welcome sound as my speaker was on. The welcome screen convinced me that it was booting up as usual .after wards i checked all the cables .in the meantime i had to start and shutdown the pc repeatedly directly . after sometime i discovered that i can still listen the beep but the welcome screen sound is gone(my speaker is always on) .Now i realise that at present it is also not booting . I am in a total mess , the pc is not booting , display not showing .Please help me urgently

N.B. My pc has no virus . I scan everyday using Malwarebytes